Chromosomal DNA deletion confers phage resistance to Pseudomonas aeruginosa.
Chromosomal DNA deletion confers phage resistance to Pseudomonas aeruginosa.
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染色体 DNA 缺失赋予噬菌体对铜绿假单胞菌的抗性
DOI:
10.1038/srep04738
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发表时间:
2014-04-28
影响因子:
4.6
通讯作者:
Hu F
中科院分区:
文献类型:
--
作者:
Le S;Yao X;Lu S;Tan Y;Rao X;Li M;Jin X;Wang J;Zhao Y;Wu NC;Lux R;He X;Shi W;Hu F
Bacteria develop a broad range of phage resistance mechanisms, such as prevention of phage adsorption and CRISPR/Cas system, to survive phage predation. In this study, Pseudomonas aeruginosa PA1 strain was infected with lytic phage PaP1, and phage-resistant mutants were selected. A high percentage (~30%) of these mutants displayed red pigmentation phenotype (Red mutant). Through comparative genomic analysis, one Red mutant PA1r was found to have a 219.6 kb genomic fragment deletion, which contains two key genes hmgA and galU related to the observed phenotypes. Deletion of hmgA resulted in the accumulation of a red compound homogentisic acid; while A galU mutant is devoid of O-antigen, which is required for phage adsorption. Intriguingly, while the loss of galU conferred phage resistance, it significantly attenuated PA1r in a mouse infection experiment. Our study revealed a novel phage resistance mechanism via chromosomal DNA deletion in P. aeruginosa.
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影响因子:
4.2
作者:
Garbe J;Bunk B;Rohde M;Schobert M
通讯作者:
Schobert M
影响因子:
8.8
作者:
Hall, Alex R.;Scanlan, Pauline D.;Buckling, Angus
通讯作者:
Buckling, Angus
影响因子:
4.5
作者:
Lee MC;Marx CJ
通讯作者:
Marx CJ
影响因子:
2.1
作者:
Dean, CR;Goldberg, JB
通讯作者:
Goldberg, JB
DOI:
10.1007/978-1-4614-3567-9_16
发表时间:
2012-01-01
期刊:
EVOLUTIONARY SYSTEMS BIOLOGY
影响因子:
--
作者:
Buckling, Angus;Brockhurst, Michael
通讯作者:
Brockhurst, Michael